On Tuesday 25 February 2014, Magnus Damm wrote: > And the DMABOUNCE code does not support HIGHMEM, so because of that > the block layer BOUNCE is also used. Ah, I misunderstood this part previously. I understand better what's going on now, but this also enforces the impression that both BOUNCE and DMABOUNCE are not what you should be doing here. On a related note, I've had some more discussions with Santosh on IRC, and I think he's in the exact same position on mach-keystone, so we should make sure that whatever solution either of you comes up with also works for the other one. The situation on keystone may be a little worse even, because all their DMA masters have a 2GB limit, but it's also possible that the same is true for you. Which categories of DMA masters do you have on R-Car? a) less than 32-bit mask, with IOMMU b) less than 32-bit mask, without IOMMU c) 32-bit mask d) 64-bit mask Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
